Question

How much work would it take to push a `4 kg` weight up a `3 m` plane that is at an incline of `pi / 4`?

Answer 1

`83.156 j`

Explanation:

work = F.d, where F =force and d =distance

`F = mgsin theta` where `m = 4kg, g =9.8 m/s^2 and theta = pi/4`

therefore,
work `= 4 * 9.8 * sin (pi/4)* 3 = 4 * 9.8 * 0.7071 *3 = 83.156 j`